If the difference of two positive numbers is 3, find the least possible value of thei

If the difference of two positive numbers is 3, find the least possible value of their product
(using differenciation)

January 22nd 2013, 01:12 PM

ebaines

Re: If the difference of two positive numbers is 3, find the least possible value of

Set up the equation for this: given a first number x and a second number x-3, their product is P=x(x-3). Determine dP/dx, set it to 0, and solve for x. This will give you either a minimum value for P or a maximum. So try it - what do you get for x? Is it a min or a max?